Disk-sharpener.



0. L. OASSADY.

DISK SHARPENER.

APPLICATION FILED MAR. 21, 1912.

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DISK SHARPENER.

APPLICATION FILED MAR. 21, 1912.

Patented N0v.12,1912. v

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UNITED STATES PATENT OFFICE.

CHARLES I]. CASSADY, OF RODEO, NEW MEXICO.

DISK-SHARPENER.

Specification of Letters Patent.

- a citizen of the United States, residing at Rodeo, in the county ofGrant, State of New Mexico, have invented certain new and usefulImprovements in Disk-Sharpeners; and I do hereby declare thefollowing'to be a full, clear, and exact description of the invention,such. as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to disk sharpeners.

The object of the invention resides in the provision of a disk sharpenerwhich can be readily associated with a disk plow or a disk harrow so .asto effect the sharpening of a disk while the machine is in mot-ion andwithout requiring the removal of the disk or the least disorganizationof the machine part to arrive at the result' sought.

A further object of the invention resides in the provision of a disksharpener of the character referred to in which the grinding element maybe adjusted relatively .to the disk. being sharpened so as to bear uponthe latter with the proper .force and in the proper relation.

With the above and other objects in view,

the inventionconsists in the details of conapplied, Fig. 2, a sideelevation of the sharpener on an enlarged scale, Fi 3, a section on theline 33 of Fig. 2, Fig a section-on the line 44 of Flg. 3, Fig. 5,

a detail perspective View of the supporting brackets of the sharpener,Fig. 6, a detail perspective view of the grinding elementcarriersupporting arm, and Fig. 7, a detail perspective view of thegrinding element carrier.

Referring to the drawings A represents a cultivating disk and B thescraper supporting arm of a disk plow all of well known construction.Clamped to the arm B is a bracket 10 and adjustably connected to thisbracket is the inner end of a grinding ele ment supporting arm 11. Itwill be noted that the bracket 10 is provided with a plurality ofopenings 12 while the inner end of the arm 11 is'provided with aplurality ,of openings 13 certain of which latter are adapted to bebrought into registration with the openings12 to permit of the passageof bolts 14: thercthrough and the securing of the arm'll to the bracket10 in different adjustments. The outer end of the arm 11 is offset withrespect to theinner end and this ofiset outer end is providedintermediately with spaced ears 15 between which is pivotally mountedagrinding element carrier 16 which extends contiguous with the outer endof the arm 11. The outer face of the carrier 16 is grooved as. at 17 andthis groove is crossed at spaced points by bridges 18. Disposed in thegroove 17 is a grinding element 19 which is held against movementlongitudinally of the carrier 16 by means of binding screws 20 mountedin the bridges 18 and manipulated to bind respectively upon the grindingelement 19. Mounted in the outer end of the offset portion of'the arm 11is an adjusting screw 21.

Rotatably mounted on the inner end of each adjusting screw 21 is asocket 22 which receives one end of a spring 23, the other- PatentedNov. 12, 1912. Application filed March 21, 1912. Serial No. 685,378.

end of said spring bearing against the inner face of the carrier 16. Bythis construction it will be apparentthat the outer end of the carrier16 is yieldingly held against movement on its pivot toward the outer endof the offset portion of the arm 11 by means of the spring 23. It willbe further apparent that by manipulating the adjusting screw 21 thetension of the spring 23'may be varied and the carrier thus disposed atdifferent angles to the offset .end of the arm 11 and of courseindifferent adjustments with respect to the disk being shar ened. Thisadjustment just referred to Wlll enable the grinding element 19 to bebrought into proper relation to a' disk to effect the sharpeningthereof. 1

Mounted in the inner end of the offset portion-of the arm 11 is a setscrew 24, the forward end'of whose shank is adapted to engage the innerend of the carrier .16 and act as a stop to limit the movement of theouter end of the carrier away from the outer end of the offset portion'of the arm 11 under the influence of the spring 23. This set screw 24maybe readily adjusted so as.

to' vary the extent of movement ofthe outer end of the carrier under theinfluence of the spring 23.

What is claimed is:

A disk sharpener comprising a bracket provided with means for attachmentto a plow part, an arm adjustably connected to said bracket, ears on thesides of said arm at corresponding points respectively, a grindingelement carrier pivotally mounted between said ears, a grindingelementsupported by said carrier, an adjusting screw mounted in theouter end of said arm, and a spring having one end in engagement wlthsaid adjustingscrew and its other end 1n engagement with the outer endof said oar- 15 men In testimony whereof, I affix my signature, inpresence of two witnesses.

CHARLES L. OASSADYI Witnesses:

Josnrn J. WHEELER, J. C. MITCHELL.

